| اسم الشركة | البريد الالكتروني | الهاتف |
| Nasser Bin Abdullatif Alserkal Est | ||
| national steel fab | office@nsfzak.com | 24594945 |
| Oasis Grace | 0 | |
| Oman & Emirates Co. For Commercial Projects | 0 | |
| Oman Mechanical Services Company | 0 | |
| oman mix | 0 | |
| Oman Pumps Mfg. & Engineering Services | owpsal@omantel.net.om | 24446098 |
| oman shapoorji | 0 | |
| OMAN SHAPOORJI CONSTRUCTION | oscomct@omantel.net.om | 24590297 |
| Omani Engineering Consultancy Company | admin@oeccs.com | 23292486 |